package com.neu.gulimall.order.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class MyMQConfig {

    /**
     * 容器种的 Exchange、Queue、Binding 都会自动创建（RabbitMQ没有的情况下）
     *  RabbitMQ 中只要有，@Bean 声明的属性即使发生变化也不会覆盖
     * @return
     */
    @Bean
    // 延时队列
    public Queue orderDelayQueue(){
        Map<String,Object> arguments = new HashMap<>();
        arguments.put("x-dead-letter-exchange","order-event-exchange");
        arguments.put("x-dead-letter-routing-key","order.release.order");
        arguments.put("x-message-ttl",60000);
        //  public Queue(String name, boolean durable, boolean exclusive, boolean autoDelete, Map<String, Object> arguments)
        Queue queue = new Queue("order.delay.queue", true, false, false,arguments);

        return queue;
    }

    @Bean
    public Queue orderReleaseOrderQueue(){
        Queue queue = new Queue("order.release.order.queue", true, false, false);
        return queue;
    }

    @Bean
    public Exchange orderEventExchange(){
        // public TopicExchange(String name, boolean durable, boolean autoDelete, Map<String, Object> arguments)
        TopicExchange topicExchange = new TopicExchange("order-event-exchange", true, false);
        return topicExchange;
    }

    @Bean
    public Binding orderCreateOrderBinding(){
        return new Binding("order.delay.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.create.order",
                null);
    }

    @Bean
    public Binding orderReleaseOrderBinding(){
        return new Binding("order.release.order.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.release.order",
                null);
    }


    /**
     * 订单释放直接与库存解锁进行绑定
     * @return
     */
    @Bean
    public Binding orderReleaseOtherBinding(){
        return new Binding("stock.release.stock.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.release.other.#",
                null);
    }

    /**
     *  秒杀削峰队列
     * @return
     */
    @Bean
    public Queue orderSeckillOrderQueue(){
        Queue queue = new Queue("order.seckill.order.queue", true, false, false);
        return queue;
    }

    @Bean
    public Binding orderSeckillOrderQueueBinding(){
        return new Binding("order.seckill.order.queue",
                Binding.DestinationType.QUEUE,
                "order-event-exchange",
                "order.seckill.order",
                null);
    }


}
